Lock



Dec. 11 1923. 1,477,181

A. MONTI Loox Filed May 27. 1922 2 sheets-sheet x Dec. 11 1923. 1,477,181

A. MONTI LOCK Filed May 27. 1922 2 Sheets-Sheet 2 JMJ/0 Ma/w 351A M 4 l Gnome Patented Dec. 11, 1923.

Lamai ANELLO MONTI, on MEarnEN, coNNncrIcU'r.

LOCK.

Appiication med May 27, maa serial No. s4, o26.

T 0 all '10h-0m t may Con-cern.'

Be it known that I, ANELLO MONTI. a citizen of the United States, and a resident of Meriden, county of New Haven, and State e of Connecticut, have invented certain new and useful Improvements 1n Locks, of which the following isa specification. f

This invention relates to locks and latches, and more particularly to a lock intended to be operated by a key, associated with other A further object 'is to produce a lock, or`

this charactentheparts 'of which must be successivelymanipulated to effect the re-y bodiment offthe invention', is vmounted ony lease of 'the locking mechanism.

A further object is to provide av lockl which will be simple'and inexpensive, composed of comparatively few parts and which will be very'efcient, reliable, and durable in use.v Y

With these and other objects in view, there has been illustrated on the accompanying drawings one -f'orm in 'which the inven-` embodied 1nprac-.

tiony may be conveniently so tice.

Fig. 1 illustrates a viewinelevation ofthe exterior'mechanism-ofthe lock and the securing elements'fassociated with it.

' Fig. '2 1s a sectional view of the lock casing showing the mechanism located therein.

Fig. 3' is a sectional view taken along the lineB-S of'Fig. 2, lookingv inthe direction of the arrows. Fig. 4 is a sectionalv viewv taken'along the e0 linel P4 of Fig. 1, looking in thedirection of the arrows.

Fig. 5`is a sectional view taken along theA line 5- 5 of Fig. 1 looking in the direction ofthe arrows." Fig. 6 is a perspective view of the key hole guard and tumbler associated therewith.v

Fig. 7 is a perspective-view of one of the locking arms;

Fig. 8 is a perspectivegview of the opposite "loeking arm.

Fig. 9 is a perspective view of one of the springs used in the device.

Fig. 10 is a perspective view ofthe locking bar.

Fig. 11 is a perspective view of an eyebolt for connecting the lock to the closure. Fig. 12 is a perspective view. of the key employed for operating the lock.

Referringy now to ythe''drawings in whichV like reference numerals denote correspond.-

ing partsthroughoutthe several views, the numeral 15 denotes a lock casing, the," shape of whichv may' be varied to suit dierent ref'quirements. The front plate of the `casing 15 is pryided with a keyhole 16 and` also has apertures'l? vand 18. As clearly 'shown iny Fig. 3,"a keyhole 'guard-l 19,'iwhich is rigidly secured to a pivot pii 20, is pro- 'vided' with a recess'21`inr`its` rear bottom portion, forming-a seat to 'receive-'the nose 22 of a latch'25'which, in' the "present ema'y pivot 24g carried by astud 25 projecting from the lock casing 1 5. push .b'ar 26V is connected to the latch 23 at 26a," andV has its top portion 26b projecting through the top of the lock casingyasf shown in Figs. 2v and 3. The top portion 26b 'is preferably hid-k den by a lflange 2 7formed aI continuation The push bar' 26 has a si' de lug28 engaged by a spiral tension spring 29,-w`hic'h spring is anchoredV to a hook 30 on the-'tp'oftlie lock casing.l vThe spriln`g29 :exerts a continuous pull on the pushloar 26 to hold the parts the positionshown iin;` Fig. 3. y,/1s""will be evident, when the pushl b'a1""2 6-`is Vforced downwardly, "the keyhe1e"'guard` 19 may be moved too neY sideJ the direction of the arrow i I Rigidly mounted onith'e' inner" e'n'd of the pivot20 isaj lockinglbar'or-tumbler 31, and

l it will be evident thatjwhenv the keyhole guard is rocked,'the"tu`mbler 31 will also rotate an equalv amount, as' w'illf'be' hereinafter more fully explained Provision is alson'iade of apair' of locking arms 32 and 33,"h`e'r`ein showiia's being provided with eye-members 34e-adapted to slidably fity over' a' locking bar 35: The

locking bar 35 rwill preferably be; secured to the door' or other: guarded structure by eye-bo'ltsf' and 37, whileth'e lock willprefer'ably 'loey secured to the' door frame'` or other stationarys'upport,y Itwil-lbe obvious,

however, that the position of these parts may be reversed within the scope of the invention. In this case, the lockwould be mounted on'the door frame, while the locking bar would be secured to the door. In any event, the locking arms 32 and 33 will be pivotally mountedon the bar 35, and when they are released from the lock casing andr tively, to form seats to receive a locking bolt 42, which is slidable in guides-43 secured the they inner side of the face plate of thel f lock. The faces of the lugs 38y and 39 are' y separated by a clearancefspace 44. The locking bolt has opposedv'notches 45 and 46 1 The locking arm 47 and 48 having` opposed recesses 49 and 50 adapted to permit the lugs 38 and 39 to pass Atherethrough after they are brought into alinement, and thus -to allow the locking arm 32 to beswung outwardly to clear Vthe lock casing. f Y l Y 33 is provided with lugs respectively,l and the opposed faces of these lugs are spaced apart to form a clearance 51 'which will permit the locking arm 33 to be swung outwardly on its vpivot when notches 52 and 53 of the'locking bolt 42 are'opposite the clearance space 51. The notches 45, 46,

` 52, and 53 of the' lockingbolt 42 areso ar- 1 ranged that when the .locking bolt is in position to free the locking arm32, it willr not be in position to release the other locking arm 33, and vice versa. Consequently,

the llocking bolt will have to be operated in such a manner as to bring it into position to release the lockingiarms 32 and 33 successively. j

The lug47 of the locking arm 33 has an upward extension 54 arranged in spaced relation tol a projection 55 on the inner face of the locking arm 33, the clearance beto an open position. rangement, the tumbler 31- will prevent the tween the parts 54 and 55 being suiiicient to receive the tumbler 31'whichl will be located therein when the keyhole guard 19is swung By means of this arrelease of the locking arm 33 until the keyhole guard 19 again is moved intol the position opposite the keyhole shown in 'Fig'. 1..

Depending from the locking bolt 42 is ay pair of lugs 56 and 57, which are in spaced relation to each other and are adapted t0 be engaged by the wing 58 ofy a key 58, for sliding the locking bar in opposite directions. The locking bar also has a pair of -f notches 59 ando() on itsA upper edge above the 'lugs' 56. and 57; These notches 59 and 60 are adapted to be engaged by the shoulder 61 formed by splitting the end of a spring dog v62, the shape of which is most clearly shown in Fig. 9. The dog 62 is provided on one end with an eye member 63 to receive a rivet or other fastening 64 by means 'of which the dog is rigidly anchored to the lock casing. The free end of the dog 62 1s provided with a reversely curved section 65, shaped to form a cam which is adapted to be moved upwardly against the spring action inherent in the dog by means of the key 58a. As will be clear, the shoulder 61 normally engages in one ofl the notches `59 or 60 in the upper edge of the locking bolt 42, and is adapted to be lifted out of engagement with said notchv by turning the ke`y582L whenever it is desired to free the lockingf bolt therefrom.

the top of the push bar 26, thus releasing the nose 22 of the latch 123'k 'from the keyhole guard 19., The keyhole'guard 19 will nextv be rotated in the'direction of the arrdw (Fig. 1) to uncover the keyhole.' When this move- In order to limit the inward movement of ment occurs, the tumbler 31 will be swung -v into locking position'between thefeXtension 54-and the projection 55. The key 58a will then be inserted in thekeyhole and turned.

to the right until the notches 45 and46 come into registry withj the space 44 betwen the ylugs 40 and 41.Y The lockingarm 32 may', then be swung outwardly free from the lock casing. The key will next be turned tothe left until the shoulder 61 engages one of the notches 59 or 60, which will' ber evidencedV by a clicking sound, at which time the notches or recesses 52 and 53 will/be in registry with the space 51 between the lugs 47` and 48. The ykey should then be removed and the keyhole guard 19` returned to its normal yclosed position, causing theftumbler 31 to move out from engagement with the Vextension 54 of the `lug 47, after which the locking arm 33 may be readily swung freey of the lock casing, permittingthe doo-r or other closure to be readily opened by grasping the end of the bolt 35. When it'is desired to lock the door, the steps just described must -be reversed.

While there has been disclosed in this specification one form in which the invention may be embodied,` itgis to be understood that this form is shown for the purpose yof illustration only, and f that the; invention is not to he limited to the specific disclosure but maybe modified and embodied in various other forms without departing .fromlitsj spirit. In short, the invention includes all the modifications and embodiments coming Within the scope of the following claims.

Having thus fully described the invention, what is claimed as new, and for which it is desired to secure Letters Patent, is:

l. In a lock, a bolt, a casing, a sliding lock bar in said casing, an arm pivoted on said bolt and having means adapted to be detaehably engaged by said look bar, a movable keyhole guard on the outside of saidl casing, a detent member rigidly secured to said keyhole guard for holding said arm, said detent member being adapted to be disengaged from said arm when said keyhole guard is moved into normal closed position.

2. In a lock, a bolt7 a casing, a sliding look bar in said casing, an arm pivoted on said bolt, said arm having means adapted to be engaged by said sliding bar and disengaged therefrom by sliding thevbar to a predetermined position, a keyhole guard on the outside of said easing, a detent member rigidly secured to said keyhole guard for holding said arm, said detent member being adapted to -be disengaged from said arm when said keyhole guard is moved into normal closed position.

3. In a device for looking a door to a door frame, a easing element and a swinging looking element, one of said elements adapted to be secured to said door and the other of said elements being adapted to be secured to said frame, a keyhole in Said casing element, a keyhole guard, and means in said easing element to prevent the disengagment of said elements except when said keyhole guard is in closed position.

In testimony whereof, I have aHiXed my signature to this speoiiioatio-n.

ANELLO MONTI. y 

